Shock-absorbing hub.



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i lll o -a wf PATBNTED JUNE 11, 19o?. C. 0. GNIGGS L J. o. JENSEN.

SHOCK ABSORBING HUB.

APPLICATION FILED APB.. 10.1908.

2 SHEETS-SHEET 2` 3 Numdam 7. attomws @RIG-Uta SHOCi-(MBSHEENG HUE.

Specification of Letters Patent.

Patented .Tune 11, 1907.

App 'gafiizh lgd April l0, i906. Serial No. 310,957.

Be it known ihzily we, Cniinnns C. Glnoos und inns ifnin im'nNssN,cizons of the Unied Siolfs, rrsidingy no lnrelni, in the county of'linnn find Sinin ole liiinh', hoyo inrenind V and useinl improvenienisin nlloch-fibsornmgi iinbs, of which the .lollowin@ is n spew; iwi-tion.i

Our inver relai-Gs lo shock-nbs()rbing or rel'ionnding' hubs forvVehicles, or rotatable nnnnhir rim milio-n :nid ouinnor poriion withinlerinsdnnie springs, and our inveniion @ons *s oi h@ paris :nid 'thononstfrueions :rnd ffolribin'm. of 'i .l is which will bo herel :indnmrd.

nponjying drawing" forming on and in whiei .if-no hi i i, n, sideelevnlion v liz-odi, nf; our;l invention. i'iew oi :i huh showing oneirs removed, nid` with parijs r'ifiin oi' the radially .nw oniiiied, ncross w on he lino .llmfl' oi Fig. L. is'n` .sideview oi) ihe rimii'sl'iowini,r iiho inwordii' oxi'einiing radial lugs.

i i doinrhod and positioned :dongsiide or the rim. l (i, is@` side Viewof the inner l ib deinrlird. Fig 7, is o soeiionn s l ,i 4 f. v View onrho "ne omo oi' ligr. b. li si. 8, Q,

il), und il, nro modilinnlions lo horelicrred to. 4in sniflidrmviuifs fris :i hub which for the pnrposos of iilnsrniion nnri' represent the L' nwlw-.ei dosi ned purliruinrljsv for uio- :illoun'h iiVv muy alsorepresent my the l nb oli :any other wheel, 1 r illy or moior driven, orthe hub@ zy or ohir ri'ilolioble port ol' innehinory, :is ihnrsssn'r'inl l'oniurcs oi" their veni'i'on shown :ire npplienhlo theretowilli ont r ohnnggjrs due to the particular chornrtor of iho wh e undiis hub. Assuming hiu; die nnb shown is `l'or on automobile, il', willbe providod with npproprintennd well known soekeis for the s Jokesshown.

lThe hub rousisis oi: innernnd ouluorlinen'ione oi which, (I, wowillhereinafter s ihn inner hub, and the other, li, e rnn, :nid suiinbleinterposed springs or lions u, :ind c adapted to so cushion ILhe .rim,from tho inner hnb thai vioiont shoelrs seeiion oi" Fig, Yi, showingrthe rings i l duo to thowheol striking obstructions or un- 55 evenplaces in the rond, and 'to uneven loads i being thrown on or oil' inillel ensel of mn.-

ehinory, and the shoelr io engine or motive powery enusod by startingwheels or nin.- chinery, will be redneed io a minimum. in our hub Wediminish the slm-ling torque und thus prolong the liio oi tho wheel ormnehino, ind oomluco to the eomlort oi` the occupants oi" motor vehicleswhose wheels nro supplied with our invoniion.

The hub C shown in Fig. 2 is suppose-d to be rigid with the :i-Xle,notsliown. Then viewed from the ond iL is oi' polygonal or' runny-sidedform, and it is enst, or oiliorwiso mudo rigid h the radially projectingarms ihe order porbious oi' which are formed with slots 1. "iho angularsides oi' tho hnb :ire also, preferably, falsi', or Unido rigid withthe. projoolionn d which form the seats for the innor ends oll theroidal springs (1 which wo 7 will horoinnitor moro fully describe. Theouter member oi thohnb Consists of rho nnnnlzn' bernd or rim H on theinner oironmierenoo ol which are formed the sockets or seats 10 for bhoouter ends of tho radial springs o, those sockets being formed otnpproprinto distances apart around the rim and opening-r through the'ontor sides oi the rim 'bo 'facilitate the insertion and removal of theSprings, as shown in Fig. Li.

Bolted or otherwise Secured to the outer 'vertical faces of the rim ilnro tho nnnnlzn bands or rings 'i which form closures i'or the onteropen sides oi the sockets l0 und thereby rotni'n the. .springs in properposition. Theso springs :iro prelernl'ilux helical, und nro or rnnged to`yield in sn'bstnutinlly radial planos, as iol' instance, when the wheelstrilws nn obsirnction in the, rond; :ind in the hub shown rho springsoro arranged in pairs with one. member oi @sich pair at, ono side andthe other member ol" the sinne 'mir at the other sido oi'tho Verticalcantor oi the rim II, said rixn having, also, extendingr inwardly :fromits inner circuniiorence, the rodinl lugsf each of which is disposedbetween u pniroi` Springs.

Tho nrmsj ex' te11d into the spaces between adjacent arms noi thepolygonal hub-and beyoud the plane of tho outer @nds oi tho nrrns 6,anni their opposite sides nro recessed ntf to receive iho ends el' thorods b said rods being, prol'ernbly, curved :1nd concentricY with L rimand inner circumference of the Lilli.

IOO

inner hub. The rodsl extend front-the side l of one arm f to theadjacent side ofthe next j arm, their middle portions passing through jthe slot e in the outer ends of the arms e of the inner hub. Upon theserods between the adjacent faces oi the arms e and j are suitably coiledsprings c which act in conjunction with the radial springs to absorb orrelieve the wheel of the shocks due from any'of the causes before noted,or from any other cause.

Over the outer sides :of the rim H and hub C and rings or bands i, weplace close Afitting disks or cover plates B which .lit flatwise againstthe rings i. and ends ol'v the inner hub and are firmly secured in placeand rigidly' to the inner hub by means ol bolts 7ly which pass throughthe plates and through holes in the inner hub, and are secured byappropriate nuts. The plates B :form an effective barrier against theingress of dust and dirt to the springs and other internal parts of thehub, and make a close receptacle for lubricants (preferably graphite oroil) and also serve to prevent the hub from collapsing under undue endstrain.

iVhile we have shown two sets of radial springs and their ad j unctsthis is not essential, as the number and arrangement of the springs willvary according to the weight the hub is to carry and the strains towhich it is subjected also the rods b may be other than curved, forinstance, straight.

In the case of automobiles and the like, we may use an inner hub likethe one shown and hereinbeliore described, with its radial andsupplemental springs, and rigid radial arms, but 'for driven wheelswhich are not sell-propelling wheels, the radial arms of the inner hubmay each be made of ilexible steel so as to possess the requisitespring. itself, said arm, f2, in this case, being adapted to operateagainst suitable lugs or rollers 12 on each side of it and being maderigid with the rim H, as shown in Figs. 8 and 9. In case of lightvehicles, such as bicycl es, motor-cycles, etc., the radial spring armf2 just alluded to might enter within .the coil of the radial spring, asin Fig. 11.

` By means of the radial spring arms, or the` rigid arms andsupplemental springs c, we diminish the starting torque, and shock toengine or motive power, caused by startingr Wheels or machinery, or bywheels striking npbjects while running. In case of machinery or shaftingthe radial springs might be dis- `carde l, in which instance the rim Hwould have a loose hearing on the shaft, and the inner hub C would bekeyed or .otherwise fastened to the shaft. By using this arrangement onshafting, or a series of shafting and pulleys, it would avoid andequalize violent shocks due either to uneven loads being thrown ofi oron, or to sudden changes in power. Nin-Wever the arrangement is used,thehieoi the machinery is increased, whether j in a vehicle or in a lineof shafting, and in all cases we will have an increase in power due tothe even manner in which the power is applied through the supplementalsprings c, and spring arms.

Provision may be made l'or adjusting the tension of the radial helicalsprings. The adjustment may be made from the bottom as in Fig. 10; or itmay be made from the top as in Fig. 10. IlE made from the bottom, thelug d can be imade with a movable seat, to move radially for the springto rest upon. This may then be raised up and down, adjusting the tensionof the spring, by suitable means, as a key or wedge inserted in a slotformed between the bolt holes /L in the inner` hub, as in Fig. 10, andadapted to raise the spring seat as required. For the top adjustment, aset screw .sf may be passed through the rim Il and adapted to engage andadjust the seht or socket member in which the upper or outer end ol` thespring is received.

Having thus described our invention what we claim new and desire tosecure by ,Letters Patent is:

1. A shock absorbing hub comprising a rim portion provided with inwardlyprojecting lugs, said rim having, also, recesses or sockets in its innercircumference and leading through the outer side of the rim, a ring orcover plate fitting against said outer side of the rim and closing theopen sides of the sockets, a hub having radial projections arranged toenter the interspaces between the 1"' lugs of the outer rim, radialsprings between the rim and hub and having one end seated in sa'idsockets. and cushions interposed belWeen the lugs' of rim and hubrespectivehT and compressible when the rim is moved relatively to thehub.

2. A-shock absorbing hub comprising an outer rim having radial lugsspaced around its inner periphery and projecting inwardly, an inner hubhaving arms extending outwardly into the interspaces between adjacentlugs on the rim, rods extending across said interspaccs and having theirintermedid ate portions substantially en'ibraced by the outer ends ofthe radial arms ol the inner hub, and springs on said rods one upon eachside oll the arms and compressible between the latter and the lugs,substantially as described.

3. A shock absorbing j outer rim having lugs projecting radially inwardfrom the central portion; an inner hub havingarms extending radiallyoutward and intothe interspaces between adjacent lugs, said arms havingtheir outerl ends slotted; rods fixed in place between the faces of adjacent lugs said rods passing through the slots in said arms; radialsprings interposed between the rim and inner ub; and supplementalsprings on the rodsone upon each side of the arms, and eompressiblebetween hub comprising an IOO IOS

the latter and the lugs, substantially as described.

4. A shock absorbing hub having in coinbin'ation an outer riin providedwith spaced -inwardly projecting lugs, said rirn having,

vradial springs having one end seated on the said lugs of the inner huband the opposite end fitting the recesses or sockets in the riin,supplemental springs interposed between the arms of the h'nb and thelugs on the riin, and a ring fitting 'llatwise against the outer sideoll the rim end closing the open sides of the sockets whereby the radialsprings are removably confined in place.

1n a shock absorbing` hub the rim portion, the inner hub portion, andthe radial springs therebetween, said hub having seats for the innerends or" the springs and said rin1 having sockets around its innercircumference, and opening through the outer sides of the riin, a ringVfitting over and closing the open outer sides ol' the sockets7 anddisks or plates bolted to the hub -and covering the outer sides ollv theriin and the internal parts and thereby protecting thein from dirt anddust.

In testimony whereof we have hereunto set our hands in presence ol twosubscribing witnesses.

CHARLES GRIG iS. JICNS (TIIKIS'VIAN JENSEi'. Witnesses:

Wilma li. Cnorr, WiLLMAN P. Cairrnn.

